--- a/catalog.xml
+++ b/catalog.xml
@@ -5,4 +5,7 @@
   <rewriteSystem systemIdStartString="http://cdn.docbook.org/release/xsl@suffix@/current/" rewritePrefix="./"/>
   <rewriteURI uriStartString="http://cdn.docbook.org/release/xsl@suffix@/@version@/" rewritePrefix="./"/>
   <rewriteSystem systemIdStartString="http://cdn.docbook.org/release/xsl@suffix@/@version@/" rewritePrefix="./"/>
+  <!-- legacy URIs -->
+  <rewriteURI uriStartString="http://docbook.sourceforge.net/release/xsl@legacySuffix@/current/" rewritePrefix="./"/>
+  <rewriteSystem systemIdStartString="http://docbook.sourceforge.net/release/xsl@legacySuffix@/current/" rewritePrefix="./"/>
 </catalog>